The temperature of the combustion flames can reach ____°F.

An electric engine fan is controlled by ____.

Typical radiator cap pressure in an automotive cooling system is ____ psi.

The correct coolant/antifreeze mixture for use in most vehicles is ____.

Each of the following is a likely location for a heat-sensitive switch used to control an electric cooling fan, except the ____.

What is a frequent cause of freeze plug failure that allows a coolant leak to develop?

Technician A says a 50/50 mix of antifreeze and water is commonly used to provide protection for most weather conditions. Technician B says that minimum coolant strength should be several degrees lower than the lowest normal temperature for the climate of the area. Who is right?

Which of the following is not a method used to cool an HV battery pack in a hybrid vehicle?

While discussing thermostat service, Technician A says a stuck thermostat can cause engine overcooling. Technician B says a stuck thermostat can cause engine overheating. Who is right?

Some cooling systems can use plain water instead of antifreeze.

One of the functions of antifreeze is to lubricate the water pump.

Liquid cooling systems are the most common for passenger cars.

A block heater is often used on diesel engines to aid winter starting.

The radiator's primary function is to store engine heat.

Air cooling systems circulate fresh air through internal engine passages to carry away engine heat.

Open cooling systems are no longer used on vehicles.

A molded radiator hose fits only a specific year and make of vehicle.

The worm drive hose clamp is seldom used in cooling systems.

High thermostat heat ranges are used in modern vehicles to reduce exhaust emissions.

A flex fan alters airflow in response to engine speed.

Aluminum in the cooling system can be corroded by some types of antifreeze.

Manufacturers recommend changing antifreeze every three years.

A radiator cap should never be removed when the engine is hot.

Overcooling seldom causes problems other than slow delivery of heat to the passenger compartment.

When pressure-testing a cooling system, a pressure of at least 25 psi should be developed to pinpoint leaks.

If the cooling fan can be wiggled up and down, the water pump will probably need replacement.

Combustion leakage into the cooling system can form acids that attack the radiator and other components.

If an apparently defective temperature gauge works properly when grounded, the sending unit should be replaced.

Supercharger cooling systems often operate at much higher pressures and temperatures than engine cooling systems.

A fluid coupling fan clutch is designed to ___________________________ at higher speeds.

The thermostat ___________________________ is the temperature at which it opens to permit coolant flow.

___________________________ cooling is often used on high-performance cars, since it can provide a more uniform engine temperature.

An electric water pump uses an impeller and a large ___________________________ motor to force coolant through the cooling system.

Oil turns a milky white color when ___________________________ and water mixes with it.

A hot ___________________________ and pan of water can be used to test a thermostat for proper opening.

Cooling system ___________________________ will remove rust and other contaminants.

Grinding and chattering noises are indications that the ___________________________ is badly worn.

A combustion leak will turn the fluid in the block tester from blue to ___________________________.

A missing fan shroud can cause engine ___________________________.

Identify the cooling system component marked B on the diagram

Identify the component labeled F of the cooling system shown in this illustration.